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Data as of Nov 7, 2026

83.230.0.0/18

65 residential-proxy exits · 30 days

Silesian University of Technology, Computer Centre

Announcement
this exact prefix
RPKI valid
Announced by
AS15744
Type
Residential
81% of it

Residential-proxy exits

Proxy exits
65
0.40% of its addresses · 30 days
Always-on exits
4
6.2% of its exits
Spread
15 of 64
/24s with at least one exit
Providers
75
selling exits here
Oct 8, 2026 – Nov 6, 2026

Exits seen per day

6.3K observations

/24s with the most always-on exits

/24Always-on exitsProxy exits
83.230.40.0/24112
83.230.4.0/24110
83.230.12.0/2412
83.230.47.0/2412
83.230.5.0/24013
83.230.41.0/2407
83.230.6.0/2405
83.230.46.0/2403
83.230.7.0/2402
83.230.42.0/2402
83.230.14.0/2402
83.230.36.0/2401
83.230.43.0/2401
83.230.44.0/2401
83.230.13.0/2401

Proxy providers listing exits

  • 2Captcha
  • 2Extract
  • 711Proxy
  • Ake.net
  • AnyIP
  • B2Proxy
  • BartProxies
  • BirdProxies
  • BlurPath
  • BottingTools
  • ByteProxies
  • Byteful
  • CliProxy
  • DataImpulse
  • Decodo
  • EZProxies
  • EnigmaProxy
  • Evomi
  • FastProxy
  • FlashProxy
  • FlexyProxies
  • FloppyData
  • GSocks
  • Geonix
  • GloryCloud
  • GonzoProxy
  • HydraProxy
  • IPCola
  • IPFly
  • IPOasis
  • IPPeak
  • IPRoyal
  • Infatica
  • InfiniteProxies
  • KindProxy
  • Kookey
  • LemonBright
  • LemonPrime
  • LightningProxies
  • LudaxProxy
  • MangoProxy
  • MoMoProxy
  • NextProxy
  • NodeMaven
  • NodeProxy
  • NovProxy
  • NovaProxy
  • Novada
  • Oxylabs
  • Proxiware
  • Proxy-Seller
  • Proxy4U
  • ProxyEmpire
  • ProxyHat
  • ProxyRack
  • ProxyStyler
  • ProxyWing
  • Proxyma
  • PuraRoute
  • RainProxy
  • RapidProxy
  • RolaProxy
  • Shifter
  • Smartproxy
  • StrikeProxy
  • SwiftProxy
  • TalorData
  • Thordata
  • ThunderProxy
  • VantageProxies
  • VibeProxies
  • VitalData
  • VitalExclusive
  • VitalProxy
  • Webshare

Announcements

More specific

Announcements inside

PrefixOriginTypeProxy exitsHolderRPKI
83.230.0.0/19
since Nov 2023
AS35434Residential35
2 always on
Silesian University of Technology, Computer Centre
83.230.14.0/24
since Mar 2015
AS202220Residential2Silesian University of Technology, Computer Centre
83.230.32.0/20
since Nov 2023
AS35434Residential29
2 always on
Silesian University of Technology, Computer Centre
83.230.40.0/21
since May 2023
AS51175Residential28
2 always on
Silesian University of Technology, Computer Centre
83.230.48.0/22
since Feb 2009
AS35434ResidentialSilesian University of Technology, Computer Centre

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
83.230.0.0/1732,768PL-CKPOLSL-20040521Silesian University of Technology, Computer Centre (ORG-CSUO1-RIPE) · PLALLOCATED PAMay 21, 2004abuse@silweb.pl
└ 83.230.0.0/23512PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PADec 18, 2013abuse@pirxnet.pl
└ 83.230.2.0/23512PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PADec 19, 2013abuse@pirxnet.pl
└ 83.230.4.0/23512OSK4NET4NET S.C.ASSIGNED PADec 18, 2013biuro@4-net.pl
└ 83.230.6.0/24256OSK4NET4NET S.C.ASSIGNED PAJun 30, 2010biuro@4-net.pl
└ 83.230.7.0/24256JOTA-NETunknownASSIGNED PADec 20, 2013biuro@jotanet.pl
└ 83.230.8.0/221,024PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PADec 19, 2013abuse@pirxnet.pl
└ 83.230.12.0/23512JOTA-NETunknownASSIGNED PAMar 6, 2014biuro@jotanet.pl
└ 83.230.14.0/24256ObslugaPCObsluga PC P. Dudzinski P. Jablonski P. Ral B. Miller s.c.ASSIGNED PAAug 19, 2014abuse@pirxnet.pl
└ 83.230.15.0/24256SOWNETSowNet - Tomasz G?siorASSIGNED PAApr 24, 2014sownet@sownet.pl
└ 83.230.16.0/204,096PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PASep 1, 2014abuse@pirxnet.pl
└ 83.230.32.0/221,024PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PASep 1, 2014abuse@pirxnet.pl
└ 83.230.36.0/23512PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PAMay 12, 2008abuse@pirxnet.pl
└ 83.230.38.0 - 83.230.38.159160PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PADec 20, 2013abuse@pirxnet.pl
└ 83.230.38.160/2816JOTA-NETunknownASSIGNED PADec 20, 2013biuro@jotanet.pl
└ 83.230.38.176 - 83.230.39.255336PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PADec 20, 2013abuse@pirxnet.pl
└ 83.230.40.0/212,048PL-MULTIPLAYMultiplay Sp. z o.o. (ORG-MSZO24-RIPE) · PLASSIGNED PAOct 29, 2010abuse@multiplay.pl
└ 83.230.48.0/24256PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PAJan 20, 2009abuse@pirxnet.pl
└ 83.230.49.0/24256JUNISOFTEXJunisoftex Sp. z o.o.ASSIGNED PAJan 21, 2009abuse@junisoftex.pl
└ 83.230.50.0/23512PIRXNETPirxNet Grzegorz Bialas (ORG-PGB3-RIPE) · PLASSIGNED PASep 1, 2014abuse@pirxnet.pl

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

16,384 addresses
TypeAddressesShareRanges
Residential13,29681%7
Business3,08819%2

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS15744

PL
Name
Silesian University of Technology, Computer Centre
Type
Education
Registered
Oct 3, 2000
Domain
polsl.pl
Website
www.polsl.pl/rju1-ck/sask/
Industry
Colleges, Universities, and Professional Schools
Spamhaus ASN-DROP
not listed